@misc{indiciaef20d48a97f6d,
  title = {Spontaneous pneumoperitoneum.},
  author = {G Stansby and J R Novell and J M Thomas and G Hamilton},
  year = {1991},
  url = {https://pubmed.ncbi.nlm.nih.gov/1675887/},
  note = {Source identifier: 1675887}
}